Q: What are the prime factors of the number 659,808?

 A: 2, 3, 29, 79

Why are those the prime factors of the number 659,808?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 659,808

659,808
Factor Arrows
2329,904
Factor Arrows
2164,952
Factor Arrows
282,476
Factor Arrows
241,238
Factor Arrows
220,619
Factor Arrows
36,873
Factor Arrows
32,291
Factor Arrows
2979

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 29, 79

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 29 x 79 = 659,808

This can also be written as 25 x 32 x 291 x 791 = 659,808

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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